Does any one knows about manual, links or have some advice on how to tune the 240z carburator.

I'm not a professional mechanic, but I love to work on my Z.

This is one link

http://www.jetlink.net/~okayfine/sutech.html

I'm gonna take a look

You can buy video from Z Therapy.

HERE is the link to the description of tape.

And another link to Z Therapy home page:

http://www.ztherapy.com

Les

As mr. Blue Z suggests, Buy the tape. I've been recommending that tape to all the roadster/Z folks who ask me to tweak their carbs. I tell them "It may get boring", You may fall asleep", "but rewind the parts you missed", "watch it twice, or three times, or the day before each tune up". Obviously, the production values are low, BUT, the info is dead-on, the best tool for SU tuning.

Victor's blatant product endorsment ends here.